Nonlinear hydroelastic responses of a submerged horizontal plate under focused wave conditions: a cumulative fatigue perspective

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dc.contributor.authorDing, Haoyu
dc.contributor.authorHuang, Luofeng
dc.contributor.authorZang, Jun
dc.date.accessioned2025-01-15T11:40:07Z
dc.date.available2025-01-15T11:40:07Z
dc.date.freetoread2025-01-15
dc.date.issued2025-01-31
dc.date.pubOnline2025-01-06
dc.description.abstractMost current analytical research on the hydroelastic interaction between water waves and submerged horizontal elastic plates remains within the scope of linear theory due to the underdevelopment of mathematical methods for solving nonlinear problems. To address this gap, this work employs an approach that combines computational fluid dynamics (CFD) with computational solid mechanics (CSM) to dynamically simulate the fully coupled nonlinear hydroelastic interactions between ocean waves and a submerged horizontal plate. This research highlights the significance of nonlinear point responses of a submerged horizontal plate under focused wave conditions. A phase-based harmonic separation method (i.e., phase-decomposition method) is used to isolate wave amplitude and force harmonic components in complex wave scenarios. This approach allows for the clean delineation of individual harmonics from the total wave force by controlling the phase of incident focused waves and is for the first time applied to the response analysis of elastic structures. This paper successfully used the phase-decomposition method to separate the individual harmonics of the point displacement of a horizontal elastic plate, directly demonstrating the significance of nonlinear responses. Additionally, the impact of plate rigidity, which relates to natural frequency, on nonlinear responses is investigated. The results indicate that plates with a certain dimensionless plate rigidity will exhibit more significant nonlinear responses. By cleanly separating each individual harmonic response, this study provides new insights into the nonlinear hydroelastic responses of a horizontal plate interacting with water waves and offers a new perspective on fatigue analysis, underscoring the importance of nonlinearity for future engineering designs.
dc.description.journalNamePhysics of Fluids
dc.description.sponsorshipThe authors are very grateful for the financial support from the UK EPSRC [Grant Nos. EP/T026782/1; EP/V050079/1; and EP/V040235/1].
dc.identifier.citationDing H, Huang L, Zang J. (2025) Nonlinear hydroelastic responses of a submerged horizontal plate under focused wave conditions: a cumulative fatigue perspective. Physics of Fluids, Volume 37, Issue 1, January 2025, Article number 017110en_UK
dc.identifier.eissn1089-7666
dc.identifier.elementsID561640
dc.identifier.issn1070-6631
dc.identifier.issueNo1
dc.identifier.paperNo017110
dc.identifier.urihttps://doi.org/10.1063/5.0246534
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23329
dc.identifier.volumeNo37
dc.languageEnglish
dc.language.isoen
dc.publisherAIP Publishingen_UK
dc.publisher.urihttps://pubs.aip.org/aip/pof/article/37/1/017110/3329367/Nonlinear-hydroelastic-responses-of-a-submerged
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectFluids & Plasmasen_UK
dc.subject40 Engineeringen_UK
dc.subject49 Mathematical sciencesen_UK
dc.subject51 Physical sciencesen_UK
dc.subjectRenewable energy power planten_UK
dc.subjectElastic modulusen_UK
dc.subjectWave mechanicsen_UK
dc.subjectSignal processingen_UK
dc.subjectSpectral discriminationen_UK
dc.subjectSeparation processesen_UK
dc.subjectComputational fluid dynamicsen_UK
dc.subjectHydrodynamicsen_UK
dc.titleNonlinear hydroelastic responses of a submerged horizontal plate under focused wave conditions: a cumulative fatigue perspectiveen_UK
dc.typeArticle
dcterms.dateAccepted2024-12-11

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